??
???????2?18???? ??18?????????,1???,??3.69?,??12.1%?
???????????,??,???????????,?????2.75?,?????????????74.6%,??10.6%??1446.17????????,?????17.6%,??971?,????????18.9%?
???????????,1???,??????4.23???,?????2884.72?????????????????,????3.27??,???2664.89?????????,??????????0.77????0.48????,?10.9%?????????17.5%?
???,1????,????????????439????,???????????3.7%,??18.3???????????(???) ?????:??????????
?????????
?????1??????????????12.1%?????????????